With your budget constraints, on the cheaper end of things, there are the CoralBox DC controllable “Quiet Pump” wavemakers that are fairly inexpensive for the amount of water they move. I believe they may be rebranded and upgraded Jebao pumps. I would purchase them from a reputable US dealer like Logan from ReefBreeders who will provide a 12 month US warranty and post purchase support.
With a tank of your length, I’d go with a minimum of the QP-9+ but ideally the QP-16+ (which you can dial down).
https://www.reefbreeders.com/shop/coralbox-qp-9-plus/
https://www.reefbreeders.com/shop/coralbox-qp-16-plus/